Marydel, DE Radon Mitigation and Testing

Q: What EPA Radon Zone is Marydel in?

Marydel is in Kent County, EPA Zone 3.

Q: How much does radon mitigation cost in Marydel?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Kent County

EPA Zone 3

Positioned in Kent County within Delaware's Dover Metro area, Marydel sits on Coastal Plain sediments that typically produce lower radon levels statewide. Testing data for this 19964 zip code community is currently limited, though Delaware's geological conditions generally result in minimal radon concerns. The area's mix of older and newer homes on various foundation types still warrants occasional testing for complete peace of mind.

Marydel, DE Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Marydel, DE Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Marydel Radon Facts

Key details about the radon risk profile for Marydel and the 19964 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Kent County, DE

Zip Code

19964

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Marydel and the 19964 zip code are located in Kent County, which has an EPA assigned Radon Zone of 3. A radon zone of 3 predicts an average indoor radon screening level less than 2 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Marydel, DE

What EPA Radon Zone is Marydel in?

Marydel and the 19964 zip code are in Kent County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.

How much does radon mitigation cost in Marydel?

Radon mitigation in Marydel typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.

Should I test for radon if I'm buying a home in Marydel?

Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.

Most Active Radon Markets in Delaware

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Middletown	7.43 pCi/L	7
Wilmington	5.50 pCi/L	4
Lewes	6.00 pCi/L	1
New Castle	4.00 pCi/L	1
Newark	No submissions	0